LSGunZ28

iTrader: (8)

Ok here is the deal... I have a Moser 12 bolt, aluminum cover, 3.73s Trutrac..

My m6, z28 is a daily driver, and it will see both drag racing and road course / track racing.... few track meets a year and probably 10+ passes per month in drag racing, and driver daily to college, work, mountains, beach, vacation, wherever...

I had the 12 bolt on my bolt on LS1, In all reality I didnt like how it felt around the track... Sure it let me launch when I drag raced, but my 10 bolt felt a lot better around the track (handling wise) .. Now I will be installing a 402 soon, and I plan on driving it with the 12 bolt 3.73s... But I was curious to see what people are thinking about the Moser M9...

Is the M9 an improvement over the Moser 12 bolt for my application? I mean Im sure it is for drag racing, but for road course and more importantly daily driving, is the M9 a better rear?? Since the 12 bolt threw off my handling and added unsprung weight, this is why I was considereing the M9 as an improvement..

Im only thinking so, because I heard it was light, even lighter than the 10 bolt!! (or at least thats what I heard)


Are there any road racers or AutoX people here using a M9?



So key points:

Something that will handle 500+ RWHP (or more in the future)
Something that will improve my handling over the 12 bolt
Something that weighs less than a 10 bolt (or at least my 12 bolt)



If the M9 is worth it, then I can just sell my 12 bolt and buy a M9...



Thanks in advance..

EPP

iTrader: (22)

The M9 is about the same weight as the 10 bolt, but I don't think it is any lighter. I don't see why the M9 wouldn't make for a great road racing rear, we're currently setting one up for a guy in Brazil who will be road racing it. Bob

ZMONSTER!

iTrader: (9)

Good luck on something lighter than a 10 bolt, are you thinking of something like a fab 9 inch?
I love my 9 inch, I know I could do any number of stupid things and it wouldnt even scratch the clearcoat. Its kinda noisy at first, but after about a thousand miles the only time I can hear it at all is when I downshift and decelerate.
The moser 9 inch is a moser copy of the ford 9 inch, the standard in bullet proof rear ends for forever. I dont think its an improvemant so much as a contemporary of the 12 bolt.
As far as DD, well the 9 inch was never desinged for an fbody so be prepared for it to bang out a home for itself for a while.

EPP

iTrader: (22)

Yes, he is talking about the M9 which is the Moser fabricated 9 inch that came out last Fall. Here is a video of it from last Falls Sema Show. Bob
http://www.exoticperformanceplus.com...html?item=1355

ZMONSTER!

iTrader: (9)

Wow and I thought my regular run-of -the-mill moser 9 inch was tough that looks insane! So thats more of a straight race application that can be driven on the street, as opposed to a more street oriented rear end that can take some track time, correct?

EPP

iTrader: (22)

Very correct! Bob

LSGunZ28

iTrader: (8)

Thanks Bob, But Id like to see some opinions of people running the M9, that road race themselves..

BTW I purchased my Moser 12 bolt from you over a year ago from you, thanks a lot for your great customer service...

BTW, Ive asked this before, does anyone have the weights as a list to compare the 10 bolt, 12 bolt, 9", M9? etc??

6']['9

iTrader: (2)

i called moser about the M9 a while back and they told me they dont recommend DD it?

EPP

iTrader: (22)

The torque arm can make some noise an they don't want people bitching about it. My dual exhaust and the F-1A blower are loud enough the torque arm can't be heard. I really doubt it is louder than my Spohn 405 was. Bob

EPP

iTrader: (22)

Thanks, I appreciate it.
Check this thread out.
https://ls1tech.com/forums/showthrea...hlight=weights Bob

LSGunZ28

iTrader: (8)

Thanks I just saw that thread about the weights... Im still looking, but so far so no 12 bolt weight... well as long as the M9 weighs as much as a 10 bolt, If anyone is down to buy my 12 bolt ill sell it, and get a M9 and pay the difference..

LSGunZ28

iTrader: (8)

Loud as in what kind of noise? CLunking? or squeaking?

if its clunking, im sure a rubber bushing can be put in the place of impact.. IDK about squeaking, after all its a DD and I quited my exhaust, i dunno if I want a lot of noise, then again, if its no big deal I can live with it... its not me that the noise will bother, its for family or friends that im concerned about..

EPP

iTrader: (22)

I read this and I remembered that we had measured a Moser 12 bolt back in '02 that we installed in my Z28. The 12 bolt was 47 lbs heavier than the 10 bolt. Bob

LSGunZ28

iTrader: (8)

thanks, just curious was this with a limited slip or a spool, because I believe spools are lighter, also was this with an aluminum center section?

crazylane

iTrader: (19)

Noisy as in Vibrations/rattles. I didn't put grease in mine and drove it around and to the track.. Got home that was the first thing I did, It helped out. But it will still rattle around some.

EPP

iTrader: (22)

The Moser 12 bolt was an Eaton posi, if that is the rear you are asking about. Bob

LSGunZ28

iTrader: (8)

Okay cool...

im intererested in the m9 now, I still want road racers opinions on it, first..

LSGunZ28

iTrader: (8)

who will invent the indestructible 10 bolt?!

MeentSS02

iTrader: (11)

You might try frrax.com...those guys road race like it's their job, and I know a few have experience with upgrading the rear axle.

malott442

how much you want for your 12 bolt?

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